Keywords
CO2 loading
titration/volumetric analysis
laboratory instruction
How to Cite
Abstract
One of the main criteria for the selection of a suitable solvent is the CO2 solubility capacity or CO2 loading. The objective of this work is to provide students and early-career scientists a detailed description of a titration-based experiment to measure the CO2 loading using simple and inexpensive volumetric and gravimetric lab apparatus. The performance of the method is corroborated by comparing the experimental uncertainty obtained during the determination of the CO2 concentration in test samples (in an absorption unit at lab scale) with reference values obtained by mass balance based on a certified gas analyser. The results indicate that CO2 loading values between the experimental method and the reference range from ±3 to 13%, which is in good agreement with other similar methods.
References
Cuccia L, Dugay J, Bontemps D, Louis-Louisy M, Vial J. Analytical methods for the monitoring of post-combustion CO2 capture process using amine solvents: A review. International Journal of Greenhouse Gas Control 2018; 72: 138-151. https://doi.org/10.1016/j.ijggc.2018.03.014
van der Ham LV, van Eckeveld AC, Goetheer ELV. Online monitoring of dissolved CO2 and MEA concentrations: Effect of solvent degradation on predictive accuracy. Energy Procedia 2014; 63: 1223-1228. https://doi.org/10.1016/j.egypro.2014.11.132
Einbu A, Ciftja AF, Grimstvedt A, Zakeri A, Svendsen HF. Online analysis of amine concentration and CO2 loading in MEA solutions by ATR-FTIR spectroscopy. Energy Procedia 2012; 23: 55-63. https://doi.org/10.1016/j.egypro.2012.06.040
van der Lee JH, Swallow JA, Young BR. CO2 loading measurement and control in an amine absorption/stripping pilot plant. Proc Annu ISA Anal Div Symp 2003; 59-65.
van der Lee JH, Swallow JA, Young BR, Svreck WY. Monitoring CO2 loading of rich and lean streams in an amine absorption/stripping pilot plant. Proc Annu ISA Anal Div Symp 2004; 250-257.
Idem R, Supap T, Shi H, Gelowitz D, Ball M, Campbell C, Tontiwachwuthikul P. Practical experience in post-combustion CO2 capture using reactive solvents in large pilot and demonstration plants. Int J Greenhouse Gas Control 2015; 40: 6-25. https://doi.org/10.1016/j.ijggc.2015.06.005
Crossno SK, Kalbus LH, Kalbus GE. Determinations of Carbon Dioxide by Titration: New Experiments for General, Physical, and Quantitative Analysis Courses. Journal of Chemical Education 1996; 73(2): 175. https://doi.org/10.1021/ed073p175
Linde, High performance liquid chromatography (HPLC), web page: http://hiq.linde-gas.com/en/analytical_methods/liquid_chromatography/high_performance_liquid_chromatography.html, consulted in August 2018.
Vega F, Sanna A, Maroto-Valer MM, Navarrete B, Abad-Correa D. Study of the MEA degradation in a CO2 capture process based on partial oxy-combustion approach. International Journal of Greenhouse Gas Control 2016; 54(Part 1): 160-167. https://doi.org/10.1016/j.ijggc.2016.09.007
Gilmartin G, Gingrich D. A comparison of the determination and speciation of inorganic arsenic using general HPLC methodology with UV, MS and MS/MS detection. Journal of Chromatography B 2018; 1083: 20-27. https://doi.org/10.1016/j.jchromb.2018.02.034
Janse van Rensburg M, Botha A, Rohwer E. Analysis of trace amounts of carbon dioxide, oxygen and carbon monoxide in nitrogen using dual capillary columns and a pulsed discharge helium ionisation detector. Journal of Chromatography A 2007; 1167(1): 102-108. https://doi.org/10.1016/j.chroma.2007.07.055
Wurm DB, Sun K, Winniford WL. Analysis of low levels of oxygen, carbon monoxide, and carbon dioxide in polyolefin feed streams using a pulsed discharge detector and two PLOT columns. Journal of Chromatographic Science 2003; 41. https://doi.org/10.1093/chromsci/41.10.545
Esler MB, Griffith DWT, Wilson SR, Steele LP. Precision trace gas analysis by FT-IR spectroscopy. 1. Simultaneous Analysis of CO2, CH4, N2O, and CO in air. Analytical Chemistry 2000; 72(1): 206-215. https://doi.org/10.1021/ac9905625
Vaisala, “How to measure carbon dioxide”, application note. Web page: https://www.vaisala.com/sites/default/files/ documents/CEN-TIA-Parameter-How-to-measure-CO2-Application-note-B211228EN-A.pdf. Published in 2012, consulted in August 2018.
Jou FY, Mather AE, Otto FD. Solubility of solution and carbon dioxide in aqueous 1982.
Jou FY, Mather AE. Solubility of carbon dioxide in an aqueous mixture of methyldiethanolamine and N-methylpirrolidone at elevated pressures. Fluid Phase Equilib 2005; 228-229: 465-469. https://doi.org/10.1016/j.fluid.2004.10.004
Ma'mun S, Jakobsen JP, Svendsen HF, Juliussen O. Experimental and Modeling Study of the Solubility of Carbon Dioxide in Aqueous 30 Mass % 2-((2-minoethyl)amino)ethanol Solution. Ind Eng Chem Res 2006; 45(8): 2505-2512. https://doi.org/10.1021/ie0505209
Ji L, Miksche SJ, Rimpf LM, Farthing GA. CO2 Chemical Solvent Screening. 8th Annual Conference on Carbon Capture and Sequestration. DOE/NETL Pittsburgh, PA, U.S.A. May 4-7, 2009.
Kohl AL, Nielsen RB. Gas Purification, 5th ed., Gulf Publishing Co., Houston, TX, 1997.
Maddox RN, Erbar JH. Gas conditioning and processing. Campbell Petroleum Series, Norman, OK, 1982.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.